I am in the process of changing to 134A refrigerant and would like to know a current part number for a variable orfice tube. The ATCP 9-2050 as mentioned in early posts is not recognized locally. Is the 134A orfice tube orfice size the same as R12? May I have your thoughts? Thank you in advance. Leonard:
a/c question 92-2027
- Thread starter doyle
- Start date
s10blaza
BOOSTED
Re: a/c question 92-2027
Don't remember specifically why, I picked this up while working the counter at oreilly back in the day, but I was told to always use Ford "blue" orifice tubes on an older GM retrofit. I've done about 6 older GM retrofits on my cars throughout the years and never had any issues. My Typhoon would come down to 32-34 degrees with R12 and 40-41 with R134a, I'm sure a newer parallel style condenser would've helped.
This year I tried something different with the 92 Sonoma I bought. It is charged with R152a, aka three 12oz cans of computer duster I bought at walmart for $20 for a 3 pack. R152a has a very similar molecule size and pressure curve as R12. Even compatible with the older Ester R12 oils and you can keep your older tube condenser.
It feels much colder at the vents than the Syclone with R134a.
Don't remember specifically why, I picked this up while working the counter at oreilly back in the day, but I was told to always use Ford "blue" orifice tubes on an older GM retrofit. I've done about 6 older GM retrofits on my cars throughout the years and never had any issues. My Typhoon would come down to 32-34 degrees with R12 and 40-41 with R134a, I'm sure a newer parallel style condenser would've helped.
This year I tried something different with the 92 Sonoma I bought. It is charged with R152a, aka three 12oz cans of computer duster I bought at walmart for $20 for a 3 pack. R152a has a very similar molecule size and pressure curve as R12. Even compatible with the older Ester R12 oils and you can keep your older tube condenser.
It feels much colder at the vents than the Syclone with R134a.